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Manatee Migration Update: March 18, 1998
Today's Report Contains:
Latest Manatee Satellite Tracking Information
"It is very cold here--for us!" exclaimed Sirenia Project biologist
Cathy Beck in her latest report on March 13, 1998. "Bailey moved from the Banana
River over to the power plant in the Indian River with this cold weather. Bob Bonde
and Jim Reid have been in the field most of the week because the manatees are really
piled in at the warm water sites."
Take a look at the Florida temperatures on the satellite weather images for Mar 8,
12 and 14 below:
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March 8
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March 12
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March 14
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Click on each image to see full map
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- Is there any correlation between the temperatures shown on these maps and Bailey's
locations in the latest tracking data? (see
data at the end of this report below) If so, what dates do you think the temperature
influenced the manatees movements?
- Be sure to also look at today's Blue
Spring Roll Call data from Ranger Wayne Hartley, later in this report. Study
the movements of the Manatees in that location. Based on what you know from Ranger
Wayne's reports, how do the movements there correspond to the temperatures?
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click on image to see full map |
Mapping and Tracking the Manatees
Have you been using the tracking data to map the movements of the manatees from week
to week? Here's a map of their movements based on the same satellite tracking data
that you've received. How does your tracking map compare to this map? How is it different?
Are your location points in the same locations? What are the strengths and weaknesses
of each map?
As you think about these questions and study the maps, see if you can answer this
Challenge Question:
Challenge Question # 9:
"According to the satellite data for March 6, 1998, where was Knicky? Based
on what you've learned about manatees, how do you interpret this data?"
(Follow the
instructions at the end of this report on How to Answer this Challenge Question.)
Students and Scientists Come To the Rescue!
"Just last month, on February 11th, two school children were waiting for
their bus, and looked down into a storm drain. What they saw prompted them to call
the police!"
Expert Manatee rescuer, Ann Spellman, tells the whole story about the schoolchildren
who helped in this unique manatee rescue (and why the students got to skip a day
of school too!)
Responses to Challenge Question #
8
Journey North students did a nice job of summarizing some the major risks
to manatees in their answers to Challenge Question # 8, which asked students to list
all the risks they could think of that cause disease or death to Manatees. Here are
some of their responses:
FROM: NEW YORK
Causes of death:
Natural causes
1. old age
2. cold water stress
3. lack of food
4. red tide
5. disease
Human causes
1. motor boat blades
2. collisions with boats
3. dumping garbage (ocean pollution)
4. poachers
5. destruction of habitat
6. caught in nets or garbage
7. litter
8. flood control devices ( flood gate or canal locks)
9. vandalism
Sarah Pratt
Miss. Lobb's period 4 class
Hudson Falls Middle School
Hudson Halls, NY
mkrantz@mum.neric.org
FROM: NEW JERSEY
"Some natural causes are hypothermia, pneumonia, and emaciation."
Cyberkids at RBS
7th Grade
Richard Butler School Butler N.J
cyberkids@nac.net
Resources: For more information on manatees visit these informative Websites:
*Remember, call 1-800-DIAL-FMP if you ever spot an injured, orphaned, dead, harassed,or
tagged manatee.
Just In! Ask The Expert Answers From The Manatee
Expert
Special thanks to Nancy Sadusky, Save the Manatee Club, for providing her time
and expertise in responding to these student questions. To read all of the questions
and answers, click below:
Ranger Wayne's Blue Spring Roll Call
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Ranger Wayne Hartley
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On March 14, 1998, "Phyllis gave birth between 12:35 and 10:12. Probably at
night in the Boil (area of the run). Phyllis' birth of this manatee calf is a first
for the Park!" The new calf was given the name Phire (pronounced fire).
Challenge Question # 10
"How do you think manatee calves are named?
(Clue: it has something to do with the calf's mother's name)"
(Follow the
instructions at the end of this report on How to Answer this Challenge Question.)
CONGRATULATIONS to Ranger Wayne and the entire Blue
Spring staff! Ranger Wayne also sent in his usual Roll Call data.
- Remember to look over this data in light of the temperature-related movements
described by Cathy Beck and the satellite weather images shown above.
- Can you correlate this data at Blue Spring with the temperature changes in the
weather images?
Roll Call Chart
Date
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Air Temp (C)
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River Temp (C)
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Run Temp. (C)
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# of Manatees
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03/09/98
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nt
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19.4
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22.6
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0
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03/10/98
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6-24
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18.8
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nt
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1
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03/11/98
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4-19
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17.4
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nt
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11
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03/14/98
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3-23
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15.6
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nt
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51
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03/15/98
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5-27
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15.6
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22.5
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50
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Responses to Challenge Question # 6
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Photo credit:s USFWS |
Speaking of manatee movements and data, our thanks go to observant Sarah Pratt from
Ms. Lobb's class in Hudson Falls Middle School, for her answer to Challenge Question
# 6 which asked about the nearest city to "Brian" when he wasn't moving
and had "been at the same site for a couple of weeks?'"
According to Sarah, "Brian was located closest to the city of Miami when Cathy
Beck reported on 2/17/98 that Brian has been at the same sight for a couple of weeks."
Sarah Pratt
Ms. Lobb's period 4 class
Hudson Falls Middle School
Hudson Falls, NY
mkrantz@mum.neric.org
Sarah was right. Miami, FL was one of the large cities that Brian was near; he was
also close to some smaller cites such as Hollywood, FL.
Today's Satellite Migration Data
(Courtesy of U.S. Geological
Survey's Sirenia Project)
- Go to Satellite Data Table for Dakota
- Go to Satellite Data Table for Knicky
- Go to Satellite Data Table for Bailey
- Go to Satellite Data Table for Hillary
How To Respond to Today's Challenge Questions:
Please answer ONLY ONE question in each e-mail message:
1. Address an E-mail message to: jn-challenge-manatee@learner.org
2. IMPORTANT: In the Subject Line of your message write: Challenge Question # 9 (OR
# 10 )
3. In the body of the EACH message, give your answer to ONE of the
questions above.
The Next Manatee Update will Be Posted on April 1, 1998
Copyright 1998 Journey North. All Rights Reserved.
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